The E12-200S is a fine example of a high quality transducer providing the right balance between performance and engineering costs. The E12-200S is a 400W program low frequency driver designed to satisfy the need for a 12″ loudspeaker which combines excellent linearity with good sensitivity and power handling characteristics. It is primarily intended for compact bass reflex applications in enclosures as small as 40 lt, typically for two-way systems in combination with 1” compression driver. The high quality paper cone has a smooth, curvilinear profile design that eliminates bell-mode resonances within the intended frequency range. This is carried by a specially treated, dampened double half-roll linen suspension which has been designed to control excursion maintaining the piston action linearity. Voice coil cooling is achieved by incorporating airways between the chassis back plate and the top plate of the magnet, allowing heated air from the voice coil and gap to be channeled away and dissipated by the chassis basket. This technology is another result of the 3D CAD resource application by our engineers.
Nominal Diameter 314 mm, 12.4 Inch
Rated Impedance 8Ω
Power Handling Capacity 200 Watts
Sensitivity 2.83 V, 1M 92.8 dB
Effective Piston Diameter 255 mm, 10.0 Inch
Voice Coil Diameter 63.70 mm, 2.5 Inch
Thiele – Small Parameters
Resonance Frequency Fs 48.4 Hz
DC Resistance Re 5.5Ω
Mechanical Q Factor Qms 13.208
Electrical Q Factor Qes 0.679
Total Q Factor Qts 0.645
BL Factor BL 11.46 T x m
Effective Moving Mass Mms 53.36 gr
Equivalent Cas air load Vas 74.72 liters
Effettive piston area Sd 0.0510 m2
Voice – coil inductance @ 1KHz Le1K 0.75 mH
Half-space efficiency Eff 1.20 %
Airgap Height Hag 8.0 mm
Voice coil Height Hvc 15.5 mm
Voice Coil Over-Hung Xmax 3.8 mm
Basket Blue Stamp Steel
Magnet type,size ODxIDxH (mm.) 156 X 80 X 20 Ferrite | 49.7 oz
Voice coil Former Fiber Glass
Voice coil Material CCAW
Cone Material Pulp Paper
Surround Treated Cloth
Dust Cap Paper
Unit Weight 4.5 Kgs.
Gross Weight 5.5 Kgs.
Packing Dimension WxLxH (Cm.) 34.0 X 34.0 X 18.0, 0.73 Cu.Ft.